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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


RemcosRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9
SHA3-384 hash: f0daa5eca312df99c746c4ef7a47baabbf098d0001eda03a65baf5be39b67d0042a05b1329ef362707b7cc51ba9f281a
SHA1 hash: 434765232143938260b28e3a4ec8ff8a9ff6f635
MD5 hash: da1bd96c5329867067768c576a1f211a
humanhash: massachusetts-zebra-fruit-nitrogen
File name:xVs5vp1oFDmz.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:480'768 bytes
First seen:2024-02-07 16:04:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 5d354883fe6f15fcf48045037a99fb7a (126 x RemcosRAT)
ssdeep 12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSsn9:uiLJbpI7I2WhQqZ7s9
TLSH T1DDA4AE02BAD2C072D57161344D2AE735DABDBC212835997BB3E61D5BFD30180A73A7B2
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c4d48eaa8ad4d4f8 (1'215 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter pmelson
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
402
Origin country :
US US
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/475227/
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
crypto evasive eventvwr fingerprint fingerprint hook keylogger lolbin shell32
Link:
https://www.filescan.io/uploads/65c3aa30e8d5f6639a35f18b/reports/2323db20-0040-456c-8457-99a61e3d09d7/overview
Verdict:
Malicious
Labled as:
Dacic.A9349469.A.Generic
Link:
https://www.hybrid-analysis.com/sample/7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7de63c72-971c-4ddd-a9e0-14b9c97bcaa1
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388533
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Uses dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1388533 Sample: xVs5vp1oFDmz.exe Startdate: 07/02/2024 Architecture: WINDOWS Score: 100 37 nuevosremcs.duckdns.org 2->37 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 49 10 other signatures 2->49 9 xVs5vp1oFDmz.exe 5 5 2->9         started        13 notepads.exe 2->13         started        15 notepads.exe 2->15         started        17 notepads.exe 2->17         started        signatures3 47 Uses dynamic DNS services 37->47 process4 file5 31 C:\Users\user\AppData\...\notepads.exe, PE32 9->31 dropped 33 C:\Users\user\AppData\Local\...\install.vbs, data 9->33 dropped 53 Contains functionalty to change the wallpaper 9->53 55 Contains functionality to steal Chrome passwords or cookies 9->55 57 Contains functionality to register a low level keyboard hook 9->57 59 2 other signatures 9->59 19 wscript.exe 1 9->19         started        signatures6 process7 signatures8 51 Windows Scripting host queries suspicious COM object (likely to drop second stage) 19->51 22 cmd.exe 1 19->22         started        process9 process10 24 notepads.exe 2 4 22->24         started        29 conhost.exe 22->29         started        dnsIp11 39 nuevosremcs.duckdns.org 46.246.80.210, 49703, 49704, 49705 PORTLANEwwwportlanecomSE Sweden 24->39 35 C:\ProgramData\notas\logs.dat, data 24->35 dropped 61 Antivirus detection for dropped file 24->61 63 Multi AV Scanner detection for dropped file 24->63 65 Contains functionalty to change the wallpaper 24->65 67 5 other signatures 24->67 file12 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-02-07 16:05:06 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pnfpn3wnhx4koiy47p4yag7kwlzqbqhic6grmbwhbxdxtcqqtluq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:nuevos persistence rat
Link:
https://tria.ge/reports/240207-tjg62agd4x/
Behaviour
Modifies registry class
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
nuevosremcs.duckdns.org:9090
Unpacked files
SH256 hash:
7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9
MD5 hash:
da1bd96c5329867067768c576a1f211a
SHA1 hash:
434765232143938260b28e3a4ec8ff8a9ff6f635
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/5de4a724-7375-49fd-b243-3d2ec8495551/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7b4af6eecd3d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

RemcosRAT

Executable exe 7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9

(this sample)

  
Link
https://www.virustotal.com/gui/file/7b4af6eecd3df8a7231cfbf9801beab2f300c0e8178d1606c70dc7798a109ae9/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/475227/

Comments